They're probably going to add in a ninja we can obtain from the elite instances or so like Sannin war jiriyah and make GNW sai part of the event.

If they do something like that again, they're going to start getting a huge amount of complaints again.

They could possibly add in someone like one of the sannin or else another easily obtainable ninja and add gnw sai into an event shop.

If they add an easy obtainable ninja as the daily login ninja that'll surely anger the majority of the NA community, oasis would be welcoming complaints if they do that.